<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
  <div style="width: 200px;height: 200px;background-color: #00a4ff;"></div>

<script>
    console.log(window.screen)
    console.log(document.body.clientHeight)

</script>
</body>
</html>